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A gas sample occupies 1.00 L at 120.°C and 1.00 atm. What volume will it occupy at STP?  (10pts)

Given the electronegativities below, which covalent single bond is most polar?

How many protons (p) and neutrons (n) are in an atom of Tc?

This exercise is called a: Watch Media Name: Q1 Video (00:07) Duration: 00:07 Added: 09 May 2020 07:25 PM Added By: Oladipo Eddo Description:   Tags:   Watch Media Name: Q1 Video (00:07) Duration: 00:07 Added: 09 May 2020 07:25 PM Added By: Oladipo Eddo Description:   Tags:  

An atom of 26Mg contains ________ neutrons.

You may have heard that mixing household bleach with household ammonia is dangerous, this is true! Many different reactions can occur when these are mixed, almost all of them bad. One of these is shown below, where sodium hypochlorite, NaOCl (in bleach), reacts with ammonia, NH3, to give NaCl and H2O (which are harmless), and hydrazine, N2H4, which is toxic. NaOCl + NH3 → NaCl + H2O + N2H4 What is the balanced version of this equation?

A study is measuring the effect of a new drug to treat Alzheimer’s disease. One group of patients is taking the drug and the other is taking a placebo. All participants have their beta amyloid levels measured after the study. Which statistical test is best to test for any change?

What is the maximum amount in grams of  that can be produced by the reaction of 1.0 g of S with 1.0 g of  via the equation below?  

A balloon is filled with hydrogen gas to a volume of 3 liters, which corresponds to roughly 6 moles of hydrogen atoms (We will soon see that elemental hydrogen exists as a molecule, but that doesn’t change anything in this problem). What is the weight of hydrogen in the balloon?

Water electrolysis can be catalyzed by acid or by base. When catalyzed by acid, the overall redox reaction is shown below (in the box) 2 H2O(l) + 4 H+(aq)  →  2 H2(g) + O2(g) + 4 H+(aq)   In the overall redox reaction equation: 2 H2O(l) + 4 H+(aq)  →  2 H2(g) + O2(g) + 4 H+(aq), also shown above, which species is the catalyst?